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The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.
Diamond certified FL (flawless) by the GIA Two diamonds of grade VS 1 and SI 2 respectively. The GIA diamond grading scale is divided into six categories and eleven grades. [2] The clarity categories and grades are: [3] Flawless category (FL) diamonds have no inclusions or blemishes visible under 10× magnification. [3]
Total carat weight (t.c.w.) is a phrase used to describe the total mass of diamonds or other gemstone in a piece of jewelry, when more than one gemstone is used. Diamond solitaire earrings, for example, are usually quoted in t.c.w. when placed for sale, indicating the mass of the diamonds in both earrings and not each individual diamond.
The American Gem Society (AGS) is a trade association of retail jewelers, independent appraisers, suppliers, and selective industry members, which was founded in 1934 by Robert M. Shipley. The Society is based in Las Vegas, Nevada , along with the affiliated American Gem Society Laboratories (AGSL) (founded in 1996) and the American Gem Society ...
The AGL was established in 1981 for the purpose of standardization of diamond grading based on the method used at the Gemological Institute of America (GIA) and on the nomenclature of color in diamonds as used by the association of Gemological Laboratories in Japan (AGL).
This list will have you covered. In a year in which it seemed every great luminary got a moment under the documentary lens, it can be a bit difficult to parse out which were must-see. This list ...
IGI has the only international certification lab controlled by one central governing body that adheres to one internationally accepted system for diamond grading. [ citation needed ] IGI is International Organization for Standardization (ISO) 9001: 2000 certified in four countries, including the United States, Canada, India and the United Arab ...
If certified cost or pricing data has been requested by the Government and submitted by an offeror, but an exception is later found to apply, the data should not be considered to be "certified". [1] The requirement for a certificate of cost or pricing data may also apply to sub-contractors at any tier in the supply chain. [2] [4]